Inflation from Nilpotent Kähler Corrections

Abstract

We develop a new class of supergravity cosmological models where inflation is induced by terms in the Kähler potential which mix a nilpotent superfield $S$ with a chiral sector $\Phi$. As the new terms are non-(anti)holomorphic, and hence cannot be removed by a Kähler transformation, these models are intrinsically Kähler potential driven. Such terms could arise for example due to a backreaction of an anti-D3 brane on the string theory bulk geometry. We show that this mechanism is very general and allows for a unified description of inflation and dark energy, with controllable SUSY breaking at the vacuum. When the internal geometry of the bulk field is hyperbolic, we prove that small perturbative Kähler corrections naturally lead to $\alpha$-attractor behaviour, with inflationary predictions in excellent agreement with the latest Planck data

10 pages. v2: minor typos corrected and refs added. JCAP version

References in corpus (22)

• A Joint Analysis of BICEP2/Keck Array and Planck Data
• The Unity of Cosmological Attractors
• From Linear SUSY to Constrained Superfields
• New models of chaotic inflation in supergravity
• Cosmology with Nilpotent Superfields
• General inflaton potentials in supergravity
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• Systematics of String Loop Corrections in Type IIB Calabi-Yau Flux Compactifications
• Large Field Inflation and Double $\alpha$-Attractors
• Planck, LHC, and $\alpha$-attractors
• Single-field $\alpha$-attractors
• $\overline{D3}$ and dS
• Emergence of Spontaneously Broken Supersymmetry on an Anti-D3-Brane in KKLT dS Vacua
• On sgoldstino-less supergravity models of inflation
• Inflation and Uplifting with Nilpotent Superfields
• Does the first chaotic inflation model in supergravity provide the best fit to the Planck data?
• Inflation, de Sitter Landscape and Super-Higgs effect
• ${\varphi }^2$ Inflation at its Endpoint
• Constrained superfields from an anti-D3-brane in KKLT
• Constraining $\mathcal{N}=1$ supergravity inflationary framework with non-minimal Kähler operators
• Constraining $\mathcal{N}=1$ supergravity inflation with non-minimal Kähler operators using $\delta N$ formalism
• Interactions of N Goldstini in Superspace

Cited by in corpus (5)

• Gravitino Problem in Minimal Supergravity Inflation
• IIB String Theory and Sequestered Inflation
• Gravitino Problem in Inflation Driven by Inflaton-Polonyi Kähler Coupling
• Simple Sinflaton-less $\alpha$-attractors
• Sequestered Inflation